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    <title>Document</title>
    <style>
        h1{
            color: red;
        }
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<body>
    <h1>这是master创建的文件</h1>
    <h1>头部</h1>
    <h1>ls写的index内容</h1>
    <h1>尾部</h1>
</body>
</html>
<script>
    console.log("index");
    console.log("indexindex");
</script>